湖地下水排放作为一个重要的隐藏的营养来源,一个大型的环氧化湖:对环氧化管理的影响
Junli Zheng1, Kouping Chen1, Jianfeng Wu1
1Key Laboratory of Surficial Geochemistry, Ministry of Education, School of Earth Sciences and Engineering, Nanjing University, Nanjing 210023, China.
The Science of the total environment
|January 7, 2025
概括
湖地下水排放 (LGD) 是一个重要的隐藏的营养来源,贡献的和负载相当于河流在太湖. 管理LGD营养投入对于逆转湖泊缩至关重要,特别是在有限的系统中.
科学领域:
- 环境科学 环境科学
- 临界技术 临界技术
- 水文地质学 水文地质学
背景情况:
- 湖泊缩是一个全球性问题,由过度的营养投入驱动.
- 湖泊地下水排放 (LGD) 作为营养来源的作用仍然在很大程度上是未知的.
- 太湖是中国典型的大型,浅层和环氧化的湖泊.
研究的目的:
- 评估LGD衍生的营养负载对太湖湖泊缩的贡献.
- 揭示LGD对湖泊缩的潜在影响.
- 为了研究LGD衍生的营养负载的空间分布.
主要方法:
- 分段子质量平衡模型.
- 对营养数据的分析.
- 估计LGD流量和营养物质负载.
主要成果:
- 总的LGD流量估计为6.59 × 10^9 m^3 a^-1,相当于河流流量的57.8%.
- LGD贡献了相当大的总 (TN) 和总 (TP) 负载,相当于河流.
- 溶解的无机形式主导着LGD营养负载,与河流输入的空间差异.
- LGD显示显著丰富,可能减轻湖泊限量.
结论:
- LGD是一个主要的,往往被忽视的,营养来源,在缩的湖泊.
- 将LGD营养负载纳入管理策略是控制肥胖的关键.
- 对于具有LGD的顺湖,特别是那些经历限的湖泊,管理是关键.
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